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Finding the Fourth Proportional to 425,859.11, 638,788.64 and 110,316

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Solution

The fourth proportional to 425,859.11, 638,788.64 and 110,316 is: 165,473.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,859.11 : 638,788.64 = 110,316 : x
  2. Step 2: Convert to fraction form
    425,859.11/638,788.64 = 110,316/x
  3. Step 3: Cross multiply
    425,859.11x = 638,788.64 × 110,316
  4. Step 4: Simplify right side
    425,859.11x = 70,468,607,058.66
  5. Step 5: Solve for x
    x = 70,468,607,058.66/425,859.11
  6. Step 6: Final answer
    x = 165,473.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.